Latch



' 2 Sheets-Sheet 1. J. KAYE.

(ModeL) LATGH.

No. 258,431. Patented May 23, 1882.

2 Sheets--Sheet 2.

(ModeL) J. KAYE LATGH.

No. 258,431. Patented May 23, 1882.

F/GB.

NlTE STATES ATEENT OFFICE.

JOSEPH KAYE, OF KIRKSIALL, NEAR LEEDS, COUNTY OF YORK, ENGLAND.

LATCH.

SPECIFICATION forming part of Letters Patent No. 258,431, dated May 23,1882. Application filed January 12, 1881. (Model) Patented in EnglandApril 21,1880, No.1,643.

To all whom it may concern:

Be it known that I, J osEPH KAYE, a subject of the Queen of GreatBritain and Ireland, and residing at Kirkstall, nearLeed s, in thecounty of York, England, have invented certain Improvements in Locks andLatches, (for which I have obtained a patent in Great Britain, No.1,643, dated April 21, 1.880,) of which the following is aspecification.

. My invention relates to locks and latches such as are employed forfastening doors of apartments, carriages, easements, and the like, theobjects of my improvements being to provide adjustment for shrinkage ofthe door and convenience and security in the operation of the lock orlatch. These objects I attain in the manner which I will now proceed todescribe, reference being had to the accompany'in g drawings, in which-Figure 1 is a front view of my improved striking-plate; Fig. 2, asectional plan of the same. Fig. 3 is an edge view, Fig. 4 a side view,and Fig. 5 a sectional plan, of adoor with one form of my latch. Fig. 6is a front view, and Fig. 7 a sectional plan, of my security latchlockand Figs. 8 and 9, corresponding views of the same with the latchwithdrawn by the key.

I provide the door-latch with an improved strike,which is mortisedintothe door-jamb, and is adjustable by means of a regulating-screw towardor from the door to allow for shrinkage and expansion of the latter.

Referring to Figs. 1 and 2, the frame B of the strike is mortised intothe door-jamb, and in a recess and-slot in this frame is fitted thesliding piece A, which is provided with an antifriction roller, A, forthe bolt D of the door D to come into contact with. This sliding pieceis provided with a slotted flange, a, in which is fitted the groovedhead of an adj usting-screw, B, adapted to a threaded opening in theframe B, so that by simply turning this screw to the right or left thesliding piece A, owing to this swivel-connection, may be adjusted towardor from the door to compensate for shrinkage or expansion, andinsure thecatching of the latchbolt D behind the roller.

I prefer to employ, in connection with this striking-plate, latch-locksof thekind described in Letters Patent No. 219,485, September 9, 1879and I operate this latch through the medium of vertical handles hingedto the door, so that by pulling the vertical handle on one side of thedoor, or pushing the like handle on the other side, the latch iswithdrawn to allow the door to open.

Figs. 3, 4, and 5 illustrate a door provided with a latch of thecharacter referred to, E bein g the transverse sliding stem,actingthrough the medium of a pivoted lever on the springlatch F. To theends of this stem are hinged the lower ends of vertical handles 0 O,joined by a spring or hinge joint at their upper ends to brackets 0 0 onthe opposite sides of the door, so that on pulling the handle 0 orpushing the handle 0 the catch F of the lock is withdrawn, and the dooris pulled or pushed open.

The handles 0 0, instead of being arranged vertically, may behorizontal, and instead of being jointed by pins to the brackets (J 0 asshown, may be attached to the door by springlimbs, giving sufficientflexibility to admit of the required movement of the stem E.

I arrange a latch-lock of the kind above referred to so as to providesecurity- -as, for example, for use as a night-latchby working it with akey in the following manner: Within the lock, facing the key-hole, I fita slidingplate, which may be provided with tumblers like the bolt of alock, and which has a hole through which, when the plate is brought toone position, the key can be pushed. The key, being inserted and turnedpartly round, moves the sliding plate to the said position, andthereupon the key can be pushed farther in, causing withdrawal of thelatch, so that the door can be opened.

Referring to Figs. 6,7, 8, and 9, Fis thelatch, and K the key foroperating it.

On first introducing the key into the lockit is supposed to be preventedfrom further insertion by the sliding plate G, but on turning the keyround the plate slides forward, so as to present a hole, K, throughwhich the key can be pushed, so as to act on the end of the lever L, andso cause withdrawal of the latch F. Any known arrangement oftumblers-such as H- can be introduced into the front part of the look,so as to provide against the use of false keys.

To withdraw the key from the lock it mustbe turned backward to bring thebit ofthe key opposite the key-hole in the front case of the lookthrough which it was first inserted, and in thus turning the keybackward the sliding plate G is moved back to its normal position, (Fig.7 and dotted lines, Fig. 6,) so as to cover the openin; in the back ofthe case and prevent theinsertion of any instrument to act on the leverL of the latch mechanism.

I do not desire to claim broadly an ad j ustable striking-plate or alatch operated by pivoted handles; but

I claim as my invention l. A striking-plate having a movablestriking-face, and a screw, 13, having a swivel-connection with saidmovable striker,whereby the turning of the screw will adjust the strikertoward or from the door, all substantially as set forth.

2. The combination of the casing, latch, and lever L with aslidingplate,G, and akey adapted to operate the sliding plate, and also the saidlever, when the plate is thrown back, substantially as. described.

In testimony whereofI have signed my name 2 5 to this specification inthe presence of two subscribing witnesses.

JOSEPH KAYE.

Witnesses:

JOHN WAUGH, HAROLD W M. MrLNns.

